Water heater for stoves and furnaces



Nov. 3, 1936. w. A. MUMAUGH WATER HEATER FOR STOVES AND FURNACES Filed Sept 12, 1935 n I wm u w M 4/2 a g m mu a W \m i w i Patented Nov. 3, 1936 UNITED STATES PATENT OFFICE WATER HEATER FOR STOVES AND FURNACES 1 Claim.

This invention relates to a water heater for stoves and furnaces, or what is commonly known as a water back for heating water or a water tank for supplying hot water for a radiator to supplementally heat a cold room in a house.

The object of the invention is the provision of a water back or water heater, consisting of a relatively large capacity cylinder to be located in the fire box of a stove or furnace and which inclines relatively to the horizontal, and having a cold water tube or pipe connected to the lower end of the cylinder, and which has its delivery end extending downwardly in the side of the cylinder adjacent to the bottom thereof, and a hot 5 water tube connected to the cylinder adjacent to the highest point thereof, said hot and cold water tubes being of smaller capacity than the cylinder to slow the movement of the water through the cylinder to insure heating of it.

The invention will be described in detail hereinafter and will be found illustrated in the accompanying drawing.

In the drawing:

Figure 1 is a side view partly in section and 25 fragmentarily shown of a furnace showing the improved water heater or water back in position therein,

Figure 2 is a fragmentary front view of the furnace, partly in section, and showing the water 30 back therein, 7

Figure 3 is a longitudinal sectional view of the water cylinder, showing fragments of the cold water and hot water pipes therein, and

Figure 4 is an end view of the cylinder.

35 Referring to the drawing, in which similar reference characters are used to indicate corresponding parts throughout the several views, a

conventional furnace structure is shown at It] in which is shown a fire box l i in which is mounted a cylinder l2 of the improved water heater or back, said cylinder being arranged on an in cline, as shown, so that the cold water entering at the lower end, as will be hereinafter described, will be heated in passing through the cylinder 45 to the upper end thereof.

The preferred form of the cylinder will be as shown in the drawing circular and cross section, but obviously any other shape of the cylinder may be substituted therefor without requiring invention.

A cold water induction tube I3 is secured in a nipple l4 adjacent to the lower end of the cylinder l2, and has its delivery end extending down into the cylinder to a short distance above the bottom thereof, as shown at l5.

A hot water eduction tube I6 is fastened into or otherwise secured to a nipple I1 adjacent to the upper end of the cylinder I2. The two tubes i3 and 16 are extended through the frame l8 of the door l9, as shown at 2B and 2|, respectively, and are connected with a hot water tank or radiator (not shown) in the usual manner.

32 designates a screw plug that is engaged in a threaded nipple 23 adjacent to the lower end of the cylinder i2, and in the front wall 24 thereof, and is adapted to permit draining of the cylinder i2 and the tubes [3 and I6, and their connections, when desired, and also for removing sludge or other foreign matter from the cylinder.

It will be understood that as constructed the device is a unitary structure that is adapted to be inserted and removed through the fire door of a stove or furnace, the compact arrangement permitting of this use of the device.

What is claimed is:-

A water heater, comprising a unitary member including a cylindrical container, an L-shaped cold water induction tube secured to the top side of one end of said container and extended therein downwardly and ended adjacent to the bottom side thereof, another L-shaped tube for egress of hot water from the container secured to the top side of said container at the end remote from the first mentioned tube, the free portions of said tubes extended substantially parallel to one another and adjacent to each other, said parallel portions being axially at an acute angle to the axis of the container so that said container when positioned in a stove or furnace is inclined upwardly from the end secured to the cold water tube to discharge hot water through its opposite end to the hot water tube, said cylinder and L-shaped tubes constituting a unit for insertion through the fire door of the stove or furnace and for removal therefrom.

WILLIAM A. MUMAUGH. 

